Fireproof building-cement.



issiiio X all t li'estater. has passed off. ;20 product is finally ground.

30 substances may be omitted.

-5 cent. of t ie weight of the cement.

To all whom ihna-y-concem: "Be it known that I, Patti. Tnioi'nnrr, a subject of the Emperor of Russia, residing at St. Petersburg, ltussia, have invented cer- 5 tain new and tasteful Improvements in Fire- ,proof Builtling-Cements, of which the followin" is a specification.

iIy novel tire-proof cement consists of sulfate of calcium in combination with carj bonate of calciui n p xed in a certain proportion, heated at a temperature of 150 t. and "round into fine powder. The natural sulfate niayalso be used or the sulfate of calcium may be artificially prepared front lime such as, tufl', chalk and other lime found in nature and sulfuric acid. These substances are .-hcate(l in furnaces or, when sulfuric acid is used boiled in suitable vessels at 130 C. until The resulting In ordertto'impart hydraulic ropertics to the cement I add volcanic tuti' w iieh consists of silicates-of. aluminium, this may'also be obtained by the action of heat on silicious alumina. Pozzolana or trass may also be added or similar substances artificially obtained by calcining clays and furnace slags.

In manufacturing fire-proof cement for aerial and decorative purposes the hydraulic applications I may add powdered silicious mortar, dextrui, casein or tluor spar etc.,

wfficli impart certain propertTe's'f'fi'special pu il'pose ie cement forming the subject matter of this invention is white in color; when mixed with water quickly or slowly itbecomes hard in the air or under water. The cement is not affected by acids of alkalies and boil- 40 ing water. It is so refractory that fire will not destroy it. Changes of temperature and atmospheric influences have no effect on it. The additions of the substances for special a plications vary from .2 to 10 per Likewise I may add rye or other vegetable flour to the cement for the purpose of retarding the takin up in interior work.

he fire-proof building cement may be applied in thick layers with a trowel or it may be applied in thin layers like paint with a brush to wood, metal, stone and the like. It adheres firmly without cracking and proteats the coated surfaces. Wood becomes fire-proof when coated therewith and steel For special.

fi' aia.wom or rmsi'isi vao .at'ssu. A

irmninoor BUILDING-CEMENT.

I Q Specification of Letters Patent. 1.1-":""lpplicatioii'filcd Angust14.1906.' seria iaasosao.

highest degree and therefore may OFFICE.

I .Pateizted Feb. 11, 1908.

and iron will not rust but will withstand the action of fire. The novel cement is adapted to replace the biudim materials used in the art of building such as Tirtl'am it, ltonianskv s rig, sant cement,mortar, plaster p ris etc. Owing Fi ds property to stick j irniy to surfaces of wood and metal the cement may be used on roofs and in ship building. The cement is lire-proof to the i be used as lire-proof coverings and may be colored for that purpose.

The proportions in which the substances are mixed vary in accordance with the purpose and use of the cement. Uiie cement consisting of 24 parts of anhydrous sulfate of calcium and 6 parts or calcined ciay \\'lllUil fIFi'i'Fthe basic mass and one match of (lLXiIlli and silirf ortar gives a tensile strength with normal sand, one part of cement to 3 parts of sand '28 days after mixing up to 50.6 kilograms per square c. m. and without sand up to 54.4 kilograms per square 0. m., as regards crushing; with sand mixed in up to 175 kilograms per square c. m. and without sand up to 225 kilograms per square c. ni.; These results can not be obtained with the best standards of all Russian and foreign Portland cements. in the course of time itincreases considerably in strength.

The new cement binds also very well with chalk, asbestos, and cliainotte for fire-proof roofsTii'ith intusoria earth for coverings for steam pipes, and rubble, cork, toil, and sawdust, which are poor conductors of heat and cold. These substances are also thoroughly mixed with cement before water is added. It is advantageous to batter the cement when spreading it to obtain more strength. The new cement being white in color and of low specific gravity mixes easily with paints whereby cement masses are obtained which are uniformlycolored throughout. Mi lie-k cement lam black, and soot may b d led; red Il eaLand .vernnlhon giyesjed cement, cliron e o xid an orange color; Sehweiiifurt green and green ultramarine produces een cement and so forth. \Yhen sulfate of iiirium is added the natural white color of the cement is intensified. These colored cements are produced by adding the paints to the dry cement powder in the desired quantity. After both have been thor ughly mixed water is added.

The colored cements may be used as paints c -Manna"; LCM. 3

foicoatmg wooden,

faces. For cementing ob ects together and i as a putty it may be used to advantage both metal and stone surwhite as well col red.

making artificial stone and may be used in iron concrete work.

' it may be used for covering the overhead water in sinking petroleum pipes. v Having thus described my invention I claim as new and desire to secure by Letters Patent.

v 1. The composition for a refractory buildwork of wells and for stopping the flow of,

ingcement consisting of dehydrated finely powered anhydrous sulfate of calcium, finely powered corbornate of calcium, and silicious volcanic tuft imparting hydraulic properties. 2. A composition for refractory building cement consisting of '24 parts of lIIILlY POW- dere'd anhydrous sulfate of calcium and 6 i parts of dehydrated calcium ca mate in powdered form, and some ihcious 'olcamc tufl' mi artmg hydraulic pro es. 3. Tue composition for a refractory building cement consisting of dehydrated finely gowdered anhydrous sulfate of calcium,

nely powdered corbonate of calcium, vol- The cement is an excellent material for In tbepctroleum fields I canic substances imparting hydraulic properties, and mineral colors.

4. As a refractory building cement a composition derived from dehydrated finely pow-v dered anhydrous sulfate of calcium, finely powdered earbornn'te of calcium, and Sill cious volcanic substances in powdered form 35' imparting hydraulic ro erties. l 5., As a refractory u' ding cement a coml l i position derived from 24 parts of finely powdered sulfate-of calcium, 6 parts dehydrated finely powdered carbonate of calcium, 0110 40 part of silic-ious volcanic substance, and one part of dextrin. v

6. As a refractory building cement a composition derived from dehydrated finely powderedanhydrous sulfate of calcium, finely powdered carbonate of calcium, volcanic substances in powdered form, and mineral colors.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

PAUL TIMOFEEFF.

ll'itnesses H. A. Lovmcumn, A. Waxscnnmr. 

